diff options
Diffstat (limited to 'lib/decoding.c')
| -rw-r--r-- | lib/decoding.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/decoding.c b/lib/decoding.c index 894be79..1151afe 100644 --- a/lib/decoding.c +++ b/lib/decoding.c @@ -262,7 +262,10 @@ asn1_get_octet_der (const unsigned char *der, int der_len, *ret_len = *str_len + len_len; if (str_size >= *str_len) - memcpy (str, der + len_len, *str_len); + { + if (*str_len > 0) + memcpy (str, der + len_len, *str_len); + } else { return ASN1_MEM_ERROR; @@ -381,12 +384,15 @@ asn1_get_bit_der (const unsigned char *der, int der_len, *ret_len = len_byte + len_len + 1; *bit_len = len_byte * 8 - der[len_len]; - - if (*bit_len <= 0) + + if (*bit_len < 0) return ASN1_DER_ERROR; if (str_size >= len_byte) - memcpy (str, der + len_len + 1, len_byte); + { + if (len_byte > 0) + memcpy (str, der + len_len + 1, len_byte); + } else { return ASN1_MEM_ERROR; |